Features: * Support two ways of printing, including BT connection with smartphone and USB cable connection with PC. * Upgrade design with 1.5mm narrow side and 77mm width, increase effective printing area by 13%, providing better reading experience. * Original printer head with ceramic material, offer intelligent temperature control and clear printing image with 203 dpi resolution. * No cartridge and ink are needed. Enjoy long life span which can print up to 7000 rolls of paper. * Low noise printing with built-in upgrade structure, no worry about disturbing others even using in public areas. * Equipped with the paper holder, it is widely compatible with various paper rolls. * Support OCR text scanner, automatic identification of label height, AR photo, etc. Make life more convenient and interesting. * With USB connection to PC, it can flexibly print different types of PC documentations, improving working efficiency.